You forgot to mention the He valve position. The gen's He valve is slightly up from the 10 o'clock position. The rep's He valve is at the 10 o'clock position.
I got a response from the seller:
"Thank you for your message. We are a Registered eBay Drop Off Location and therefore are not experts on watches. This was consigned with a number of other higher end watches so we did not have reason to question it. We would very much appreciate if you could share your expertise with us and explain what makes it a replica."